Antifriction roller and ball bearing



A. B. HUBARD.

ANTIFRICTION ROLLER AND BALL BEARING. APPLICATLON FILED MAR. 15, 12o.

. ,351,754. PatntedSeptZ 1920.

assembled and eme- * stares are M "race-.

ABGHIBALD B. HUBARD, or oeonrz, PENNSYLVANIA,

aiv'rrra crron ROLLER Ann BALL BEARING.

Appfication filed March is, 1920. seria1-Naece272,

and Ball Bearings, of which the following is a full, clear, and exact. description, reference belng had to the accompanying drawings, which form a part of this specification The object of my invention is to provide an antifriction bearing adapted to carry I g the way 'the rollers are retained in the cage,

axial and transverse loads.

A hearing comprising an outer and inner race and a series of rollers .and balls, ar

ranged preferably alternately, the rollers being of greater diameter than the balls and adapted to take radial loads and the balls being of a diameter exceeding the length of the rollers and adapted to take end thrust, are known in the art. r

A hearing of this character is theoretically ideal, but actual embodiments of the. conception are open to some or allof the following disadvantages. .Their removal and assembly are more or less difficult and tedious. There ismore or lessfgrinding action between the rollers and the ball s, whichin time seriously affects their efficiency. The rollers are apt to get more or less out of parallelism. Perfect operation requires that planes containing tangents between rollers and races, and balls and races, shall be parallel and that these two pairs of parallel planes shall be respectively parallel and normal to the common axis of the races. Otherwise friction, A bearing of the type specified, after usage, departs from the ideal relation, with 'resultant friction other than-the indispensable, but almost negligible, rolling. friction.

. The object of my invention is to so modify the combination roller and ball bearing as to eliminate all. grinding action, insure the maintenance of the parallel plane relationship described, and avoid all conditions which tend to produce any friction other than a rolling friction. "A further object of H disassembled as a unit.

The structural features whereby I attain my objects can best be understood by a particular description ofthe preferred embodiother than rolling friction, develops.

inventionis to enable the bearing to be I ment of 'my invention illustrated in the accompanying drawings, wherein' i 'Figure 1 is a transverse sectional view partly broken away. 7 r

.Fig. 2 is a cross-sectional View of the hold.-

ing and separating cage. 1

Fig. 3' is a cross-section through one side of a complete bearing.

Fig. 4 is a similar view .ofa modification, 1 1g. 5 1s a constructive view showing the way the balls are retained in the cage;

Fig. 6 is a similar view to Fig. 5 showing The outer race a, which is ofhardened materlal, has its rolling surface-[or path ground cylindrical and with its'longi'tudinal dimension parallel to the axis ofithe bore.

It is provided, at one end, with an inwardly extending annular flange I) almost, but not quite, clos ng that end of the race.

Specification of Letters Patent. Patentgdgept, '7, 192(1 circumferential extension being parallel to r 7 that of the outer race and concentric with the axis. At the end thereof opposite the flange 7), the inner race is providedwith an outwardly. extending annular flange (i almost, but not quite, closing that end of the race. I

The drawings show that while theballsw and rollers y are arranged in aconventional way, they are spaced apart by means of a holding and separating "cage.v This cage is preferably constructed as shown "best' in Fig. 2. there illustrated, it comprises two rings 6, .6, each of L shaped section, one

L being uprightand the other inverted, the radial'member of the two rings abutting I and being secured togetherby rivets f,thus V forming a'compoundrmg, or cage, some what Z-shaped in. cross-section.

The rings 0,0 are adapted to receive "the balls by forming 1n their radial members circular tapered orifices whose inner. diameters are slightly larger, and whose outer diameters are slightl smaller, than the diameters of the balls.

to thefirst ring so thatthe orifices of the displacement but have sufficient. clearance to revolve freely, as shown inEig. 5. V

en the balls 'are' inserted in one ring 6 and the other ring'e is applied f bers to accommodate the rollers, as shown in The. rings 6, e are adapted to receive the rollers by cutting away, at intervals, the

' radial members of the ring throughout their entire 7 radial dimension and also cutting away the lateral flanges of'the ring 'for a suflicient distance beyond such radial mem- Fig. 6.

ring exceeds the diameter of the balls, .it is less than the diameter of the rollers. Hence,

' unit'yiof the cage and maintain the rollers parallel and separated from thezballs.

It is obvious that during'the assembly and disassembly of the bearing, the parts thereof (rollers, balls and cage) are self-contained and are therefore applied or removed V as a unit. By maintaining the rollers and balls separated, these elements cannot bear upon one another or grind together. The rollers are maintained parallel with each other and parallel with the common axis of the innerand outer races. The planes con taining tangents between rollers and races, and balls and races, are parallel, and these two pairs of parallel planes are respectively parallel and normal to the common axis of the races. Hence only rolling friction can possibly exist.

For light duty bearings a single row of balls and rollers, as shown in Fig. 3, will 'sufiice. For heavy duty bearings, two or more rows of balls and bearings will be employed.

Each row is held "in a container 6, e, corresponding structurally'to the container used with a single series bearing. Between two singlebseries bearings is interposed a hardened and ground ring 9, preferably crossshaped in cross-sectlon, as shown in Fig. 4.

' The ring 9 is freely revolvable. lVhen end thrust is appliedto the bearing, the ring 9 transmits the load from one series of balls gandrollers to another and thus onto the flange (Z at the end of the inner race.-

I While I have shown the balls and rollers arranged. alternately,. this arrangement is not 1nd1spensable,nor is it essentlal that the n er of rollers shall correspond t th b tortans, I

Havingnow run'ydes'cnbed myinvention,

what I claimand desire to protect LettersPatentlis:

. L'An 'antrfriction bearing. comprising inner and-outer races, rollers and balls between "the races, and a revolvable cage the body of which extends radially between the lVhile the external radial dimension ofthe races and is partially cut away from the reception of the balls and wholly cut away for the reception of the rollers.

[2. An anti-friction bearing comprising inner and outer races and end members, rollersand balls between the races, and a cage, having a radial extension and oppositely extending lateral-extensions, adapted to revolve between the races, the radial extension of said cage being cut out to receive and retain'the balls 'and'rollers and space them apart. a f

3. An anti-friction bearing I inner andouter races, rollers and balls between the races, and a revolvable circumfercomprising 7 ential cage comprising a web extending ra- 'dially of the bearing midway between. oppositesides thereof, said web-beingcut away throughout a part of its radial width to accommodate the balls and throughout its a tireradial width to accommodate the rollers.

4. 'An antiefriction, bearing comprising inner andouter races and end fl mem'bers,

rollers arranged between and" contacting with the races, balls of smaller diameter than the diameter of the rollers and of greater diameter than the length of the rollers also arranged between theraees, and a revolvable cage whose radial width is less than theradial width between the races and which is cut outto receive and retain the rollers and balls, space them apart and maintain the axes of the rollers parallel with each other and with the axis of the bearing.-

5.- An anti-friction bearing comprising inner andouter races, balls rollable between the races, and a circumferentially revolvable cage comprising a web extending radially of they bearingmidway between opposite sides thereof, said web havingball-receiving orifices the inner peripheryof each or which, tapers from 'each .wall. of the web away from the axis ofthe orifice whereb'y the balls will be retained in the web while .free to rotate. v

, 6. An anti-friction bearingcomprising inner and outer races, rollers-andballsfbetween the races, a pair of revolvable rings whose radial members are secured together, said rings beingof smaller radial width than the diameter of the rollers and of greater combined width, measured axially of the bearings, than the length of-the rollers the radial members of the rings, being orificed to hold the balls and permit them away throughout their radial width toform pockets for the rollers: and leave integral connecting webs along opposite edges, thereby forming a bearing structure adapted to be assembled 'anddisassembledas a unit;

I to freely rotate, the rings beingalso cut volvable cage comprising a web extending radlally of the bearing midway between opposite sides thereof, said web being cut away throughout its width to form roller receiving orifices, said cage also comprising laterally extending members integral with the cage which form connecting webs adjacent the roller receiving orifices.

' 8. An anti-friction bearing comprising inner and outer races, balls rollable between a the races, a pair of revolvable rings, each eter oi the ball, whereby the balls will be retained in the cage while free to rotate.

9. An anti-friction bearing comprising inner and outer races, rollers between and engaging the races, a pair of revolvable rings, each L-shaped in cross-section, the

Y a straight line.

radial members of which are secured together to form a cage suggestively Z-shaped in cross-section and of less radial width than the space between the races, the radial mem her and the staggered laterally extending membersof the cage being cut away at inand integral connecting webs adjacent opposite edges of the cage.

10. An anti-"riction bearing comprising inner and outer races, a plurality of circumferential series of rollers and balls, a plutervals to form a roller-receiving pocket ralit of revolvable ca es each carr in a circumferential series of rollers and balls, and a floating ring, independent of the cages, between adjacent series of balls and rollers, whereby the end thrust from the balls of one series may be transmitted to the balls of the adjacent series, substantially on In testimony of which invention have hereunto set my hand, at Philadelphia, Penna, on this 13th day of March, 1920.

ARCHIBALD B. 'HUBA'RDQ It is hereby certified that in Letters Patent N 0. 1,351,754, grant ed September 7, 1920, upon the application of Archibald B. Hubard, of Ogontz, Pennsylvania, for an improvement in Antifriction Roller and Ball Bearings, an error appears in the printed specification reqiliring correction as followsz'Page 2, line 66, claim 1, for the Word from read for; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 5th day of October, D. 1920. I [S AL] M. H. CO ULSTON;

Acting Commissioner of Patents. Cl. 64-39 

